I'm running monoblocks and they are outside the speakers which are at 8'.
Ahhh, now we get it! Well, the geniuses at SR probably don't come across too many setups where the amps are wider than 4 feet apart, let alone wider than the speakers. That's why the power umbilicals are at the amp end, and typically pretty short. Most use a stereo amp, some monos, and you and few others have amps that far apart. I wouldn't blame Synergistic, but I would ask for a free extension cable.